Annual rainfall in deserts is less than
1.150-200 mm
2.500-700 mm
3.250-500 mm
4.700-800mm
Posted Date:-2021-09-01 20:22:22
Annual rainfall in grass land is
1.1500-2500 mm
2.750-1500 mm
3.250-750 mm
4.250-500 mm
Posted Date:-2021-09-01 20:22:22
Annual rainfall in grassland is about
1.More than 2500 mm
2.750-1500 mm
3.250-750 mm
4.Less than 250 mm
Posted Date:-2021-09-01 20:22:22
Coniferous forests located at high altitude are called
1.Taiga
2.Alpine
3.Boreal
4.Arctic
Posted Date:-2021-09-01 20:22:22
Conversion of ammonia or ammonium ion into nitrites during nitrogen cycle occurs due to
1.Rhizobium
2.Nitrosomonas
3.Nitrobacter
4.Pseudomonas
Posted Date:-2021-09-01 20:22:22
Desert ecosystem of Mianwali is
1.Thar
2.Thal
3.Cholistan
4.None of these
Posted Date:-2021-09-01 20:22:22
Development of bark in plants and skin in animals is a method for
1.Providing support
2.Protection from enemies
3.Reducing water loss
4.Helping in food production
Posted Date:-2021-09-01 20:22:22
Ecosystem not found in Pakistan is
1.Tropical rain forest
2.Temperate deciduous forest
3.Grassland
4.Tundra
Posted Date:-2021-09-01 20:22:22
Ecosystem of Shogran is
1.Coniferous alpine
2.Boreal
3.Temperate deciduous
4.Grassland
Posted Date:-2021-09-01 20:22:22
Embryonic induction is caused by part developing from
1.Endoderm
2.Ectoderm
3.Mesoderm
4.Extraembryonic layers
Posted Date:-2021-09-01 20:22:22
Eutrophication is
1.Process of decreasing nutrients by human activities
2.Adequate nutrition accelerated by human activities
3.Changing the trophic levels of an ecosystem by human activities
4.Addition of more predators in an ecosystem
Posted Date:-2021-09-01 20:22:22
Evolution of vascular bundles in plants and skeleton in animals is an adaptation for
1.Hdrospheric ecosystem
2.Aquatic ecosystem
3.Terrestrial ecosystem
4.All of these
Posted Date:-2021-09-01 20:22:22
Far-red light promotes flowering in
1.Short day plant
2.Long day plant
3.Day neutral plant
4.None of these
Posted Date:-2021-09-01 20:22:22
Grass land in tropic climates with woody trees is called
1.Prairies
2.Savanna
3.Boreal
4.Alpines
Posted Date:-2021-09-01 20:22:22
Highest form of learning is
1.Latent learning
2.Insight learning
3.Operant conditioning
4.Instinct
Posted Date:-2021-09-01 20:22:22
In human female, fertilization commonly occurs at
1.Proximal part of oviduct
2.Distal part of oviduct
3.Uterus
4.Cervix
Posted Date:-2021-09-01 20:22:22
In polluted lake which organisms dominate the community
1.Fish
2.Crustaceans
3.Phytoplanktons
4.Blue green algae
Posted Date:-2021-09-01 20:22:22
In sub-humid tropical grassland productivity is more than
1.700-1500g/m2
2.4000g/m2
3.5000g/m2
4.6050g/m2
Posted Date:-2021-09-01 20:22:22
In which zone plant community is most diverse
1.Limnetic zone
2.Littoral zone
3.Profundal zone
4.All of these
Posted Date:-2021-09-01 20:22:22
Joints present in skull are example of
1.Fibrous joints
2.Cartilaginous joints
3.Synovial Joints
4.Slightly moveable joints
Posted Date:-2021-09-01 20:22:22
Mountains of Koh Hindukush come under
1.Tundra
2.Grass land
3.Tropical forests
4.Temperate deciduous
Posted Date:-2021-09-01 20:22:22
Number of cervical vertebrae is
1.5
2.7
3.9
4.12
Posted Date:-2021-09-01 20:22:22
Okazaki fragments are connected together through action of
1.Primase
2.Polymerase
3.Helicase
4.Ligase
Posted Date:-2021-09-01 20:22:22
One of the most important cause of desertification is
1.Floods
2.Wind blowing
3.Raining
4.Deforestation
Posted Date:-2021-09-01 20:22:22
Only myosine is present in
1.A band
2.1 band
3.H zone
4.Sarcomere
Posted Date:-2021-09-01 20:22:22
Ozone depletion occurs commonly due to
1.Carbon dioxide
2.Chlorofluorocarbons
3.UV rays
4.Deforestation
Posted Date:-2021-09-01 20:22:22
Productivity of an ecosystem is indicated by
1.Number of plants in that ecosystem
2.The density of that ecosystem
3.Consumption of carbon dioxide and evolve of oxygen
4.Both a and b
Posted Date:-2021-09-01 20:22:22
Purines and pyrimidines are in equal ration in DNA. It was indicated by
1.F.Miescher
2.Chargaff
3.Watson & Crick
4.Harshay & Chase
Posted Date:-2021-09-01 20:22:22
Sapwood is formed from
1.Primary xylem
2.Secondary xylem
3.Primary phloem
4.Secondary phloem
Posted Date:-2021-09-01 20:22:22
Secretin inhibits production of
1.Gastric juice
2.Pancreatic juice
3.Bile
4.All of these
Posted Date:-2021-09-01 20:22:22
Sickle cell anemia is an example of
1.Chromosomal aberration
2.Insertion of gene
3.Deletion of gene
4.Point mutation
Posted Date:-2021-09-01 20:22:22
Temperature of temperate deciduous forests is
1.4-30 degree C
2.45-50 degree C
3.20-25 degree C
4.5-10 degree C
Posted Date:-2021-09-01 20:22:22
Test cross is used to find
1.Trait
2.Phenotype
3.Genotype
4.Ratios
Posted Date:-2021-09-01 20:22:22
The most fragile of all biomes is
1.Grassland
2.Coniferous alpine
3.Desert
4.Tundra
Posted Date:-2021-09-01 20:22:22
The productivity of aquatic ecosystem is basically determined by light and
1.CO2
2.O2
3.Water
4.Nutrients
Posted Date:-2021-09-01 20:22:22
Treeless tundra of high latitude between taiga and polar ice caps is called
1.Northern tundra
2.Antarctic tundra
3.Arctic tundra
4.Polar tundra
Posted Date:-2021-09-01 20:22:22
Weather refers to
1.Short-term fluctuations in temperature, cloud cover, wind and precipitation
2.It prevails over periods of hrs or days
3.Overall patterns of weather that prevail from year to year
4.Both a and b
Posted Date:-2021-09-01 20:22:22
Which of the following hormone is polypeptide in nature
1.Insulin
2.Thyroxine
3.ADH
4.Cortisone
Posted Date:-2021-09-01 20:22:22
Which of the following is most constant abiotic component of ecosystem
1.Air
2.Water
3.Land
4.Gravity
Posted Date:-2021-09-01 20:22:22
Which statement about hydrospheric ecosystem is incorrect?
1.Salt water ocean and sea are the largest ecosystems on earth
2.Salt water ecosystem covers about 75% earth surface
3.Fresh water ecosystem covers less than 1% of earth surface
4.It temperature is more moderate to support life
Posted Date:-2021-09-01 20:22:22
Which statement about profundal zone is correct?
1.Plants are unable to anchor but enough light penetrates to support photosynthesis
2.Phytoplanktons in this region are cyanobacteria
3.Decomposers and detritus feeders inhabit it
4.Water lilies are abundant
Posted Date:-2021-09-01 20:22:22
Which statement is incorrect?
1.Average rainfall in temperate deciduous forests is 750-1500mm
2.Temperature of coniferous alpine and boreal forests is upto 10 degrees
3.Northern coniferous forests are called Taiga
4.Coniferous forests located at high latitude are alpine
Posted Date:-2021-09-01 20:22:22
XO-XX pattern of sex determination is present in
1.Grasshopper
2.Butterfly
3.Drosophila
4.Man
Posted Date:-2021-09-01 20:22:22
Yellow cytoplasm in ascidian gives rise to
1.Epidermis
2.Muscle cells
3.Gut
4.Notochord
Posted Date:-2021-09-01 20:22:22
Yellowish glandular structure which produces progesterone is
1.Graffian follicle
2.Ovary
3.Corpus luteum
4.Placenta
Posted Date:-2021-09-01 20:22:22
Zone of lake water which is of open water near the surface is
1.Littoral
2.Limnetic
3.Profundal
4.Benthic
Posted Date:-2021-09-01 20:22:22